The application does not start

[vitaliy4us]

The application does not start. Steps to reproduce:

1. Clone the project from GitHub on your machine.
2. Run yarn install as required.
3. Run yarn dev as required.
   Expected result: the application is started an is accessible on localhost:3000
   Actual result: The browser starts working but its window is blank on localhost:3000. If being reloaded the browser window displays some errors:

Error: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: null.
Check the render method of TransitionGroup.

Module anonymous
` 92 | document.getElementById("root")
93 | );
94 | } else {

95 | ReactDOM.render(
96 |
97 |
98 | `

Module ../src/index.tsx
webpack_require
`853 |
854 | webpack_require.$Refresh$.init();
855 | try {

856 | modules[moduleId].call(module.exports, module, module.exports, hotCreateRequire(moduleId));
| ^ 857 | } finally {
858 | webpack_require.$Refresh$.cleanup(moduleId);
859 | }`

fn
` 147 | );
148 | hotCurrentParents = [];
149 | }

150 | return webpack_require(request);
| ^ 151 | };
152 | var ObjectFactory = function ObjectFactory(name) {
153 | return {`

1
webpack_require
` 853 |
854 | webpack_require.$Refresh$.init();
855 | try {

856 | modules[moduleId].call(module.exports, module, module.exports, hotCreateRequire(moduleId));
| ^ 857 | } finally {
858 | webpack_require.$Refresh$.cleanup(moduleId);
859 | }`

checkDeferredModules
`42 | }
43 | if(fulfilled) {
44 | deferredModules.splice(i--, 1);

45 | result = webpack_require(webpack_require.s = deferredModule[0]);
| ^ 46 | }
47 | }
48 | `

Array.webpackJsonpCallback [as push]
`29 | deferredModules.push.apply(deferredModules, executeModules || []);
30 |
31 | // run deferred modules when all chunks ready

32 | return checkDeferredModules();
| ^ 33 | };
34 | function checkDeferredModules() {
35 | var result;`

[vitaliy4us]

Is anybody there to provide at least a comment regarding the issue blocking the application?

[vitaliy4us]

Please comment the issue in any way.

[robertguss]

Hi @vitaliy4us which branch are you on when you try to do yarn install and yarn dev you need to be on the develop branch. Not master.

Please give that a try and let me know if that helps to get things up and running for you.

I just pulled the latest version of the develop branch and can confirm that everything is working.

Also, which version of Yarn are you using? Make sure you are using a version of Yarn 1 and not 2.

[vitaliy4us]

Thank you @robertguss for updating now the application starts properly.